全球煉鋼所產生之轉爐石(Basic Oxygen Furnace, BOF)處理需要面對環境問題，若能作為瀝青鋪面級配粒料使用，不僅解決堆置掩埋，亦減少開採天然粒料資源。本研究於國道3號及國道1號轉爐石密級配瀝青混凝土(BOF-DGAC)路段進行現地檢測及鑽心取樣，評估路面績效，現地試驗項目有抗滑度、平坦度、車轍量、Clegg衝擊試驗和透水量，鑽心試體試驗項目為回彈模數及間接張力試驗。試驗結果顯示，國3南投工務段鋪築57個月之轉爐石瀝青路面，SN平均值為42.1高於參考值30，鋪面摩擦性能良好；IRI平均值為1.2m/km低於車載式1.75m/km，行車舒適；車轍量平均值為5.18mm屬輕級車轍；CIV平均值74.87高於70，鋪面結構承載力足夠，回彈模數及間接張力變化趨於穩定。國1新營工務段鋪築74個月之轉爐石瀝青路面，BPN平均值為59.69高於標線參考值45，提供抗滑能力；IRI平均值為2.74m/km低於步行式3.5m/km，行車舒適；車轍量平均值約6.62mm屬輕級車轍；CIV平均值68.6略低於參考值70，承載力足夠；透水量平均值853.1ml/15sec，仍保有透水能力。評估轉爐石應用瀝青路面績效，需長期檢測及蒐集數據分析，作為提升國內鋪面耐久性之參考。

The feasibility of using Basic Oxygen Furnace Slag (BOF) as a material for asphalt pavement, along with its environmental and economic benefits, was explored. The study was conducted on actual sections of National Highway 3 and National Highway 1, testing various pavement performance indicators, including skid resistance, flatness, rutting, Clegg impact value (CIV) tests, permeability, resilient modulus, and indirect tensile strength. The results indicate that BOF asphalt pavement performs well in terms of durability, skid resistance, flatness, and load-bearing capacity. For example, after 57 months of paving on the Nantou section of National Highway 3, the pavement showed good skid resistance (average SN of 42.1, higher than the reference value of 30), and satisfactory flatness (average IRI of 1.2 m/km, lower than the vehicle-mounted standard of 1.75 m/km). Additionally, the rutting and CIV test results indicate high load-bearing capacity and structural stability in this section. Similarly, after 74 months on the Xinying section of National Highway 1, the results showed that although some indicators, such as the CIV, were slightly below the reference value, the overall performance of the BOF asphalt pavement remained adequate, particularly in skid resistance and permeability. In conclusion, BOF has potential as a material for asphalt pavement, but long-term monitoring and data collection are required to further assess its impact on pavement durability. This study provides valuable insights into reducing the extraction of natural resources and addressing the issue of BOF slag disposal.

中國鋼鐵股份有限公司 (2020) 「轉爐石瀝青混凝土使用手冊 109年版」，高雄。
Ahmedzade, P., and B. Sengoz (2009) Evaluation of steel slag coarse aggregate in hot mix asphalt concrete. Journal of Hazardous Materials, 165：300-305.
Ali, N., J.S. Chan, E.G. Theriault, A.T. Papagiannakis, and A.T. Bergan (1991) SYSCO electric arc furnace slag as an asphalt concrete aggregate. Proceedings of the 36th Annual Conference of Canadian Technical Asphalt Association, pp. 27-45, Morin Heights, Quebec, Canada.
Asi, I. M. (2007) Evaluating skid resistance of different asphalt concrete mixes. Building and Environment , 42：325–329.
Asi, I. M., H. Y. Qasrawi, and F.I. Shalabi (2007) Use of steel slag aggregate in asphalt concrete mixes. Canadian Journal of Civil Engineering, 34：902-911.
Chen, Z., S. Wu, Y. Xiao, W. Zeng, M. Yi, and J. Wan (2016) Effect of hydration and silicone resin on basic oxygen furnace slag and its asphalt mixture. Journal of Cleaner Production, 112：392–400.
Dayioglu, A. Y., A. H. Aydilek, and B. Cetin (2005) Preventing swelling and decreasing alkalinity of steel slags used in highway infrastructures. Transportation Research Record, 2401：52-57.
Dunford, A., and P.G. Roe (2010) BOS Slag as a Surface Course Aggregate. Transport Research Laboratory (TRL) Report 647, Tarmac Ltd.
Hunt, L., and G. Boyle (2000) Steel Slag in Hot Mix Asphalt Concrete. State Research Project #511, Oregon Department of Transportation, Salem, OR.
Kambole, C., P. Paige-Green, W.K. Kupolati, J.M. Ndambuki, and A.O. Adeboje (2017) Basic oxygen furnace slag for road pavements: A review of material characteristics and performance for effective utilization in southern Africa. Construction and Building Materials, 148: 618-631.
Kehagia, F. (2009) Skid resistance performance of asphalt wearing courses with electric arc furnace slag aggregates. Waste Management and Research, 27(3): 288-294.
Li, S., R. Xiong, J. Zhai, K. Zhang, W. Jiang, F. Yang, X. Yang, and H. Zhao (2020) Research progress on skid resistance of basic oxygen furnace (BOF) slag asphalt mixtures. Materials, 13(9)：2169.
Liu, W., H. Li, H. Zhu, and P. Xu (2019) Properties of a steel slag–permeable asphalt mixture and the reaction of the steel slag–asphalt Interface. Materials, 12 (21)：3603.
Ma, L., D. Xu, S. Wang, and X. Gu (2020) Expansion inhibition of steel slag in asphalt mixture by a surface water isolation structure. Road Materials and Pavement Design, 21 (8)：2215-2229.
Ongel, A., J. Harvey, E. Kohler (2007) State of the practice in 2006 for open-graded asphalt mix design. University of California Pavement Research Center (UCPRC), California.
Pasetto, M., and N. Baldo (2012) Performance comparative analysis of stone mastic asphalts. Materials and Structures, 45：411-424.
Shen, A., C. Zhai, Y. Guo, and X. Yang (2018) Mechanism of adhesion property between steel slag aggregate and rubber asphalt. Journal of Adhesion Science and Technology, 32 (24)：2727-2740.
Stroup-Gardiner, M., and T. Wattenberg-Komas (2013) Recycled materials and byproducts in highway applications – summary report. National Cooperative Highway Research Program (NCHRP) Synthesis 435, Transportation Research Board, Washington D.C.
Teixeira, J.E., A.G. Schumacher, P.M. Pires, V.T. Branco, and H.B. Martins (2019) Expansion level of steel slag aggregate effects on both material properties and asphalt mixture performance. Transportation Research Record, 2673(3)：506-515.
Wang, G. C. (2016) The Utilization of Slag in Civil Infrastructure Construction. Woodhead Publishing, Cambridge.
Washington State Department of Transportation (WSDOT) (2015) Use of steel slag aggregate in pavements. A Report to the State Legislature In Response to 2ESHB 1299, Washington, D.C.
Xue, Y., S. Wu, H. Hou, and J. Zha (2006) Experimental investigation of basic oxygen furnace slag used as aggregate in asphalt mixture. Journal of Hazardous Materials, 138 (2)：261-268.
Zhao, Y., J. Song, J. Xie, F. Wang, M. Chen, and S. Wu (2021) Evaluation of the volume stability and resource benefit of basic oxygen furnace slag and its asphalt mixture based on field application. Advances in Civil Engineering, 2021(6)：1-10.